Huge winged monument in the United Kingdom.

"We gonna rock down to Electric Avenue, and then we'll take it higher..."

This distinctive Crescent City tradition dates back to the days of horse-drawn carriages.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

A labyrinth hides in plain sight at each of the city's 270 Tube stations.

This Stone Age solar temple aligns with the sun on each equinox and solstice.

Dublin's most modern, visually spectacular bridge is modeled after Ireland's national emblem.

This unique building in the main square stands out among the city's typically Baroque architecture.

The remains of a 1st-century aristocratic Roman town house featuring beautiful well-preserved mosaics.

Burial grounds for more than 1,000 bodies deep under the modern town of Rabat.

These mysterious Viking chess pieces spent centuries hidden on a remote Scottish island.

This influential Renaissance-era library was once the haunt of kings and monks.

This foreboding medieval castle was twice besieged by barons rebelling against the English king.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

An impressive armored bronze effigy marks the tomb of one of the medieval era's greatest warriors.

The library houses an incredible collection of some of the world's most impressive books and manuscripts.

This gorgeous beach hides behind two headlands in Oregon's Ecola State Park.

A statue of the legendary Celtic warrior queen who fought the Roman invaders stands in one of the cities she once destroyed.

The sumptuous ceiling was one of the last things Charles I saw before his execution.

A measuring mishap led to these artificial stone ladies losing their stomachs.

This otherwise ordinary close on the Royal Mile constituted the end of the world for Edinburgh’s poorest residents.

The fierce beast perches atop a pedestal marking where the historic City of London gates once stood.

The "lost friend” is the most famous of the six moai statues that were removed from Easter Island.

This macabre painting of a Shakespearean scene looks like something out of a nightmare.